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Shape following-up flexible heating device

A heating device and flexible technology, applied in lighting and heating equipment, metal processing equipment, combustion methods, etc., can solve the problems of unfavorable gas full combustion, pollution of workpieces, low calorific value, etc., and achieve uniformly adjustable combustion temperature and sufficient combustion. , easy to use effect

Active Publication Date: 2012-03-07
DONGFANG ELECTRIC MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the heating tube in the heating device is inconvenient to pass through the process holes that must be reserved when the web plate, the rib plate and the main structural plate form the intersecting weld, and the heating tube cannot be effectively close to the main body that needs to be heated for welding. If there is no seam, the purpose of conformal heating cannot be achieved; at the same time, the existing heating pipe cannot guarantee sufficient mixed gas or gas flow throughout the length of the pipe, resulting in insufficient combustion of the gas, high energy consumption, low calorific value, and Black smoke, polluted workpiece
The gas mixing mechanism of the existing heating device cannot make the gas and air mix evenly, which is not conducive to the full combustion of the gas, and the calorific value is low

Method used

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Experimental program
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Effect test

Embodiment 1

[0056] Refer to the attached figure 1 and 1a , the invention discloses a conformal flexible heating device, comprising a flexible heating tube 1 and a gas mixing mechanism,

[0057] The flexible heating tube includes a pipe body, the diameter of the pipe body is 15-20 mm, and the length of the pipe body is 500-10000 mm. section, the fire spray section is evenly distributed with a plurality of fire spray holes along the same side of the pipe length direction, the diameter of the fire spray holes is 1-1.5 mm, and the sum of the hole areas of all fire spray holes is less than the diameter cut-off of the pipe body area;

[0058] The air mixing mechanism includes a compressed air tank 13 and an air mixing tank 14, a compressed air input valve 5 and a compressed air pressure reducing valve 12 are arranged on the top of the compressed air tank 13, and compressed air tanks are provided around the compressed air tank 13. Output valve 8; a light gas input valve 6 and a heavy gas inpu...

Embodiment 2

[0064] The flexible heating pipe can be made of corrugated pipes of different diameters (generally the corrugated pipes with a diameter of 15 mm or 20 mm.) or pipes such as copper pipes or steel pipes with small rigidity, the length of which is between "500-10000" mm, and in between. According to the equal distance of "25-200" mm, the holes are evenly distributed along the same side of the pipe length direction. The diameter of the drill hole (generally choose "1-1.5" mm is better!) and the number of holes are determined according to the pipe diameter and pipe length. Generally, the sum of the hole areas of the drilled holes should be smaller than the diameter area of ​​the selected pipe, so as to ensure that the flexible heating pipe has sufficient mixed gas or gas flow throughout the length of the pipe (pure gas combustion is not sufficient, energy consumption is large, Low calorific value, black smoke, pollute workpiece!). When manufacturing flexible heating pipes, the firs...

Embodiment 3

[0076] The gas+compressed air used in the present invention (gas can be light natural gas or other heavy liquefied gas), wherein the compressed air is divided into two paths of gas supply during use, and one path of compressed air passes through the gas mixing system 2 and the gas mixing tank 14 After the gas in the gas is mixed in a certain proportion, it is sent to the slender flexible heating tube by the gas output valve of the gas distribution system 3 to realize the complete combustion and heating function of the gas. Here, the light gas and heavy gas must be input through different gas The valve enters the gas mixing tank 14, and in one use, only one kind of gas is allowed to be input into the gas mixing tank 14, and multiple gases cannot be mixed and burned, otherwise it is difficult to realize the complete combustion of the combustible gas. Another way of compressed air directly enters the compressed air tank 13, and is sent to the auxiliary air (pneumatic) tools in the...

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Abstract

The invention discloses a shape following-up flexible heating device comprising a flexible heating pipe and an air mixing and distributing mechanism, wherein a mixed light fuel gas output valve and a mixed heavy fuel gas output valve in the air mixing and distributing mechanism are both connected with one end of a mixed fuel gas output hose, and the other end of the mixed fuel gas output hose is connected with the flexible heating pipe; and a compressed air output valve is connected with a pneumatic tool by a compressed air output hose. The device has convenient use, high heat value and uniform and adjustable combustion temperature; for the preheating measure and the preheating effect required in the welding production and other hot-working technologies, the economy, the effectiveness andthe convenience of the device are all superior to those of other prior traditional preheating devices at home and aboard at present.

Description

technical field [0001] The invention relates to the technical field of conformal flexible heating devices used in the production process of metal components. The conformal flexible heating devices are mainly used for complex-shaped multi-width panels, multi-rib panels, large thickness, special steel, variable cross-section and other large and medium-sized metal components. The heating of circular or linear welds of structural parts and the thermal assembly process required by some machining industries. Background technique [0002] At present, the heating methods used at home and abroad mainly use torches, flame spray guns or far-infrared crawler-type, rope-type electric heating devices to implement overall or partial point and surface heating on large and medium-sized metal structures with complex shapes. There is always the phenomenon of high energy consumption and uneven heating temperature of the workpiece, which often leads to macro cracks or micro cracks in the worksho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23D14/40B23K5/02F23D14/38B23K5/22
Inventor 杨富永
Owner DONGFANG ELECTRIC MACHINERY
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